PowerEdge R330 S130 to H730?

Greetings,

We recently purchased two R330 servers that were inadvertently ordered without hardware raid (only embedded SATA and the S130).  We're somewhat limited on time, so we're looking to upgrade them to an H730 controller without having to process a return.  

My understanding is that an official upgrade path from S130 to H730 (or any hardware RAID controller) doesn't exist.  However, it appears that it can be done with the correct replacement parts.  If we source the parts elsewhere, what parts would be needed?  Which version/form factor of the H730 is the most appropriate for the R330 (4) 3.5" drive chassis?

Thanks!